File 0025-Grow-analyse_change-add-notification-about-only-2-de.patch of Package mdadm.7129

From a58e0da4436269cdb5f40efadf94f4d02b7e8d61 Mon Sep 17 00:00:00 2001
From: Yi Zhang <yizhan@redhat.com>
Date: Fri, 11 Mar 2016 17:26:40 +0800
Subject: [PATCH 249/359] Grow: analyse_change add notification about only
 2-device can be convert from RAID1 to RAID5
References: bsc#1081910

Notify "Can only convert a 2-device array to RAID5" instead of
"Impossibly level change request for RAID1" when convert from
RAID1 to RAID5 if the disk num is not equal two like RAID4/5->RAID1
did.

Signed-off-by: Yi Zhang <yizhan@redhat.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Coly Li <colyli@suse.de>

---
 Grow.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Grow.c b/Grow.c
index d9db00b..3204135 100755
--- a/Grow.c
+++ b/Grow.c
@@ -1077,6 +1077,9 @@ char *analyse_change(char *devname, struct mdinfo *info, struct reshape *re)
 			re->level = 1;
 			return NULL;
 		}
+		if (info->array.raid_disks != 2 &&
+		    info->new_level == 5)
+			return "Can only convert a 2-device array to RAID5";
 		if (info->array.raid_disks == 2 &&
 		    info->new_level == 5) {
 
-- 
2.16.1